Well-pump.



' No. 814,365. PATENTED MAR. 6, 1906.

A. T. EVANS 8: Vt. G. GAHAGAN.

WELL PUMP. APPLIOATIOH Hmm .mns '1. i995.

hun l Y @E11/nan@ Magra/' f :cc

Swuemtoz's 'end or foot ofthe pump cylinder or barrel B. Y vThe foot of the pump'cylinde. or barrel B 5o comprises the 'standingvr valve C, which is UNITED STATES PATENT OFFICE;

ALFRED T. EVANS AND VERNON (l. GAHAGAN, 0F GUFFEY, PENNSYL- VANIA; SAID GAHAGAN ASSIGNOR T0 WILLIAM A. McGREHOR, OF

GUFFEY, PENNSYLVANIA WELL-PUMP.

Patented March 6, 1906.

l Application led June 7, 1805. Serial No. 264,099.

To all whom, it nmy concern.'

Be it known that We, ALFRED T. EVANS and VERNON C. GAHAGAN, citizens of the'y United States, residing at Guii'cy, in the county of McKean and State of Pcnnsylv nia, have invented a VVell-Puinp, of which the following is e, specification.

This invention is an improvement in pumps, and relates more especially to that class of pumps which are employed in connection with driven wells for water, oil, and other liquids.

The primary objects of the invention are to rovidc a construction of pump for driven we lswhich shall he strong and durable, effectnv iveA in operation, and which can be readilyTl and convenienti)T removed from the well-tub ing for examination and repairs or renewal of wom parts. l

Other objects and advantages oi the invention will hereinafter appear, and what we claim as novelin the articular construction and arrangement will e more specifically set forth in the appended claims. y

In theacconipanying drawings, Figure l is a vertical sectional viewof a pump constructed in accordance with our invention. Fig. 2 is a detail plan view of the bushing winch forms the u per end or head Yoi' the pumpcylinder. ig. 3 is a side elevation ofsaid head or bushing. Fi 4 is a vertical sec tional view thereof. iig. is =a detail side elevation of the lower end or foot portion of the pump-cylinder.

Like letters of reference indicate like parts in all the views of the drawings. 1 I

Referring to said drawings, the letter A designates the well-tubing, which at suitable points is provided `with couplings A and A, and within the Well-tubing between these couplings our improved pump mechanisisrn located. The' couplingsA and A2 are of pecul iar construction to receive and support such pump mechanism. The coupling A is provided with a reduced opening al the lowered part of which is tapered, as at a', to forni a seat `for the lower threaded into said cylinder and at its lower end is beveled to correspond with the tapered opening a. This standing valve is of the 'vided with a circumferential rib c2.

balhvalve type and at the upper end thereof, within the vided with a reversi le seat or ring c and valve-cage c", the latter being threaded on the valve-casing, and holdsrin place the seat or ring, for which purpose the latter is proln order that the lower end of the standing valve C ma fit the openii c closel f, it is provided wit 1 a rinir or was er c,'held in place bv a collar c. Vithin the cage c' and adapted to seat upon the ring or valve-seat c is the usual hall c5, which actsrto close the valve affainst downward pressure in'the pmnp-cylin er.

At the upper fend of the pump cylinderor barrel B is a bushing or head l), which is 4adapted to fit snugly in a reduced opening through the coupling the latter hen provided with an annular recess ai, and wit this .-ecess is adapted to engage springactuated catches d, pivoted in recesses therefor in the' upper part of the bushing or head D. It will be noted that thefpump cylinder or barrel B and parts C and D carried thereby are of such length with respectl to the distance a art of the couplings A and A? that when t e foot or lower end of the standi valve C rests upon the seat @"o-th'e coupling A* the head o the catches d Will be on aline with the an- 4 umpcylinder, is pro-` nular recess c* of the coupling A', so as to enga e said recess and securely hold the um cy rnder and'parts C and `D firmly wit n t ewell-tubing; also that, by simply releasin the, catches in manner hereinater describe these parts can all be drawn from the wellt tubin The heads of the catches d are rounded on their under side, as shown, so that when the connected arts B, C, andD are lowered into the well-tu ing the catches will ride upon-the y .beveled surface a,a of the coupling A and be closed within the bushing until they arrive opposite the annular recess a. The catches eachK extend partly around the bushing (see Fi 2) and at their ends are provided with ro s d', Fig. 4, which pass downward through the bushing and terminate in push-buttons d, which latter work in recesses therefor in the lower end of the bushing, and within said recesses and bearin upon the push-buttons are springs d". -T e tendency'of these springs 1s to throw the catches outward, and in this position of the-catches the pushbut- IOS tons arc projected beyond the lower end of the bushing, so as to he operated upon in the manner hereinafter described to release said catches.

The bushing l) is provided with vertical perl'orations or openings d, through which the liquid isses from the iump-cylinder into the` wel -tuhiug, and it will be noted that thil upper end of theI bushing is depressed, as at of, su as to catch and hold broken rivets and other small pieces and prevent them from interfering with the working of the pump. The bushing' l) is provided centrally with an opening through which the pistonrod E passes.

F designates the piston of the pump, which is connected to the lowerend of the pistonrod E and comprises a tube F a working valve lT2 on the upper end ol said tube, and a collar or bushing j' on the lower end thereof, the seid )iston working in the pump cylinder or barrel B. The workin valve, like the standing valve, is of the ba l valve type and consists of the casing 1 ball-cage f2, the valve seat or rin j, and the ballj".

The lower en of the piston-rod E, below the husliing D, is provided with a shoulder e, as shown, which is ada )ted to contactiwith the pushhuttons d2 an operate the catches d to .release them from. the annular recess in the coupling A. This operation takes place,

` however, only when it is desired to remove the puinlp mechanism from the well-tubing, inasmuc 1 as in the ordinary operation ofY the pump it is not intended that the shoulder strike the buttons on the u Ward stroke of the piston, the connections o the pump being auch'` as to limit such upward stroke of the piston. A

In the operation of pumping the parts all o crate in thejusual manner-. that is to say, t e liquid is. drawn upward through the standing valve into the pump-cylinder 'on the upstroke of th'e piston, and 4upon the down- Stroke of said iston the standing valve is closed. and the liquid in the lower part of the pump-cylinder passes upward through the Workin valve,` sothat it will'be lifted in the well-tu e uponl the upstroke of the iston when the working valve is closed, such iquid passing from the pump cylinder upward through the periorations or opcnin s d* in the In 'withdrawing t e .pump mechaiilism from the well-tube it is only nec essary to drawl upon the pistomrod, which will release the catches d by the engagement of the shoulder e with the push-buttons di, and the` pump-cylinder and iston may be drawn through the cou ling and out through the welltube, he entire pump mechan ism is thereby removed in practically one `simple operation and may be examined for repairs or renewal of parts. In replacing amaca the pump mechanism it is only necessary to lower the saine into the well-tube, when the tapered lower end of the ump-cylinder or standing valve thereof will centered in the coupling A by means of the inclined surface a3 thereof, and passing therethrough and through the intermediate section of well-tube will rest upon the .scat e of the coupling A2, the catches d at the up er end of t 1e pump cylinder or bushing l) t ien engaging the annular recess ai: iu the coupling A' to securely and firmly hold the um `cylinder and its mechanism in the we l-tu e' or that section thereof between said couplings.

lt will be noted that most of the parts of the pump mechanism are reversil.le-t.hat is, the valveseats, the pump-cylinder, and the piston-tube.

Having thus described our in vontion7 what we claim as new, and desire to secure by lictters Patent, is-

1. The combination, in a well-pump, of an upper and'lower coupling forming a part of 'the well-tube,y the lower coupling having e seat and the upper coupling an inner annular recess, a removable pumpcylindcr located iu the well-tube between the couplings and resting upon the seat, catches carried by the pump-cylinder and adapted to engage the aforesaid annular recess in the upper coupling, a piston working in the puin eylinder, and means for releasing the catc'ies by the piston-toil.

l/2.r In a-well-pump, the combination of an upper and lower coupling| forming a part of /the well-tube, the lower ,coupling having a seat and the u er cou'plin an annular recess, a removable pum -cyfinder located in the well-tube between tliie couplings and resting upon the seat, a bushing in the upper .part of the pump-cylinder, and a standing valve in the lower part thereof, catches in the bushing engaging the aforesaid annular recess, rods connecting said catches with push-but tons projecting below the bushing, springs for projecting the catches into said recess, a valved piston working in the pump-cylinder and connectedl to a piston-rod having a shoulder adaptedto engage the push-buttons and release the catches from the annular recess of the upper couplin and thereby permit the pump-cylinder an parts to be removed from the Well-tube, substantially as shown and dcseribed. y i

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

ALFRED T. EVANS.' VERNON C. GAHAGAN.

Witnesses:

C. R. GALLUr,

T. M. BUCHANAN. 

